Abstract
Abstract The optimal allocation method to distributed generation(DG) of active distribution network was studied. Firstly, a bi-level programming model of DG in active distribution network is established. For the cause of determining the optimal installation location and capacity of DG, the upper layer model considers the minimum cost of DG investors as the objective, and the decision variables are the installation location and capacity of DG. The lower layer model considers the system operation with the objective of minimizing the network loss. The decision variables include the voltage amplitude and phase angle of each node and the consumption of distributed generation. Secondly, an modified grey wolf algorithm is proposed to solve the lower layer model, and the lower layer model is turned to a second-order cone programming problem by convex relaxation and linearization technology. Finally, the bi-level programming model developed in this paper is verified by taking IEEE33 bus system as an example, and the simulation results verify the effectiveness of the proposed method.
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